A neutral atom of an element has 2 K, 8L and 5M electrons. Find out the following. (i) Atomic number of the element.

A neutral atom of an element has 2 K, 8L and 5M electrons. Find out th

1.	A neutral atom of an element has 2 K, 8L and 5M electrons. Find out the following. (i) Atomic number of the element.
Answer» SOLUTION :The electronic configuration of the element with 2K, 8L and 5M electrons will be `1s^2 2s^2 2p_x^2 2p_y^2 2p_z^2 3s^2 3p_x^1 3p_x^1 p_y^1 3p_z^1` Total NUMBER of electrons = `2 + 8 + 5 = 15` `:.` ATOMIC number of the element = 15.